#include<iostream>
#include<time.h>
using namespace std;

//array - list of variables with one name

//you should name arryas with a plural name

//off-by-one-error
//out of bounds errors

//parallel arrays - two or more arrays related by their subscripts
void main()
{
	const int MAX_GRADES = 10;
	//the number inside the [] is called the size of the array
	//the size must be a whole number > 0, 
	//the size must be a literal or constant (can not be a variable)
	int grades[MAX_GRADES] = {0};// = {1,2,3,4,5};

	//initialize an array

	//for(int i = 0; i < MAX_GRADES; i++)
	//{
	//	//the integer in the [] is called the subscript
	//	//valid subscripts are 0 thru size -1
	//	//the subscript must be a whole number 
	//	//the size can be a literal or constant or variable
	//	cout << "Grade " << i+1 << "? ";
	//	cin >> grades[i];
	//}

	for(int i = 0; i < MAX_GRADES; i++)
	{
		cout << "Grade " << i+1 << " = " << grades[i] << endl;
	}

	int gradeIndex;
	cout << "Which grade would you like to see? ";
	cin >> gradeIndex;
	grades[gradeIndex-1] = 0;
	cout << grades[gradeIndex-1] << endl;

}